Plie

I'm all about no-fuss moves that really work, and the plié falls into that category: It's as simple to do as it looks, but infinitely more toning than you'd expect. (In fact, it's one part of the Brazilian Butt Lift workout, below. Get on that.)

Sun Salutations

A yoga sequence that works your entire body, sun salutations can especially benefit your butt: As you move from downward-facing dog into lunges and back through chair pose, you'll feel an incredible stretch right through your glutes down through your thighs and hamstrings.